Patents by Inventor Carl G. Schreyer

Carl G. Schreyer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Vertical record card adapter for record tape machine
    Patent number: RE29159
    Abstract: A vertical record card can be held at selected levels in sound recording or reproduction association with a recorder-player adapted for cassette contained record tape.
    Type: Grant
    Filed: February 25, 1972
    Date of Patent: March 22, 1977
    Assignee: Bell & Howell Company
    Inventors: George F. Krtous, Carl G. Schreyer